There is a girl I've been seeing for about 6 weeks now. We don't have an official title between us right now but we're both seeing each other exclusively. A guy that is friends with some of my friends (we all party together) has been trying to flirt with this girl I'm seeing on a regular basis lately. He has seen me bring her to parties, and she's "been with me" as far as anyone else is concerned. Everyone knows it. Last night he had a party at his house and sent her a text message inviting her to come. She texted him back and she wasn't going to come. He came by her work in the afternoon (I don't know if it was to actually buy something or just an excuse to see her, probably the later) and was giving her a hug goodbye when he kissed her on the forehead as he was leaving and said you should come by tonight. Now today there is a birthday party for one of my best friends and some how this fuck face got invited. He sent a text to the girl I'm seeing saying "I cant wait 2 c u there, hopefully u will b with me a lot ". She forwarded me the text and was like "uhh look what he sent me". Her and a couple of my other buddies are telling me I should just talk to him and make things very clear as to where he stands but he's been doing this shit for so long that I'm ready to punch him square in the fucking face the minute he walks through the door. He has made MANY attempts to get with other girl, friends of mine who were NOT single at the time. He always waits to use alcohol to his advantage. I don't know why he still gets invited to parties that we go to honestly. I've never felt so disrespected by another guy before. I don't mind casual harmless flirting here and there but he knows that she's not 'on the market' and he consistently makes attempts to get at her. I've never fought another guy because of something like this but I'm going to see this guy in about 6 hours and I'm not sure what to do. I know that if I get drunk and I see him make any kind of pass at her I'm going to end up in his face. Cliffs: Fucking douche bag guy is making passes at my girl. Should I fight him or talk to him.